ISSN:
0887-6134
Keywords:
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Gas chromatography/mass spectrometry using a combination of electron impact (EI) and Negative Ion Chemical Ionization (NICI) was used for the determination of polycyclic aromatic hydrocarbons (PAH) and alkylated-PAH in extracts of two particulate materials which are Standard Reference Materials: SRM 1650 Diesel Particulate Matter, and SRM 1649 Urban Particulate Matter. The selectivity of NICI mass spectrometry for certain PAH enabled identification and selective determination of isomeric PAH and alkylated-PAH in the particulate SRMs. Quantitative determinations for methylfluoranthenes, methylpyrenes, methylbenzofluoranthenes and methylbenzo(a)pyrenes in the two particulates showed that the methyl-substituted species were present at levels as high as 30 percent of the parent-PAH concentrations. Similarities in the alkylated-PAH content of the air and diesel particulate materials are discussed in relation to the sources of the two materials.
Additional Material:
9 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/bms.1200140806
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